Sheet processing apparatus that corrects lateral deviation of a sheet

Inactive Publication Date: 2013-11-14
CANON KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]The present invention provides a sheet processing apparatus which enable a sheet to be stopped at a

Problems solved by technology

In the conventional sheet processing apparatus described above, however, a shift unit configured such that guide members and rollers for sheet conveyance move thereon so as to correct for lateral deviation of a sheet in the width direction is used, and hence the shift unit itself is heavy in weight.
Moreover, the amount of delay in the shift unit actually starting operating with respect t

Method used

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  • Sheet processing apparatus that corrects lateral deviation of a sheet
  • Sheet processing apparatus that corrects lateral deviation of a sheet
  • Sheet processing apparatus that corrects lateral deviation of a sheet

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Embodiment Construction

[0026]The present invention will now be described in detail with reference to the drawings showing embodiments thereof.

[0027]FIG. 1 is a partial cross-sectional view schematically showing an arrangement of an image forming system 1000 to which a sheet processing apparatus according to a first embodiment of the present invention is applied.

[0028]Referring to FIG. 1, the image forming system 1000 is comprised of an image forming apparatus 300 and a finisher 100 which is a sheet processing apparatus.

[0029]The image forming apparatus 300 conveys a sheet, forms an image on the conveyed sheet, conveys the sheet with the image formed thereon, and discharges the sheet to the outside. Concrete examples of the image forming apparatus 300 include a copier, a facsimile, a printer, and a multifunction peripheral that incorporates the functionality of these devices in one, but the image forming apparatus 300 is not limited to any one of them, and any of them may be used.

[0030]The finisher 100 car...

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Abstract

A sheet processing apparatus which enables a sheet to be stopped at a target position with precision even when the sheet is stopped by moving a heavy unit such as a shift unit. A drive unit moves a moving unit so as to move a sheet, which is being conveyed, in a direction perpendicular to a conveying direction of the sheet. An output unit detects movement of the moving unit and output a signal in synchronization with movement of the moving unit. A control unit issues a stop instruction to the drive unit based on a delay time from when a start instruction to the drive unit is issued until when the signal in synchronization with the movement of the drive unit is output, and a target moving amount required for the moving unit to move to a target position.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a sheet processing apparatus that corrects lateral deviation of a sheet that has been conveyed and carries out post processing such as punching and sorting on the corrected sheet.[0003]2. Description of the Related Art[0004]Conventionally, there has been known a technique to correct lateral deviation of a sheet, which has been conveyed from an image forming apparatus, in a width direction perpendicular to a conveying direction in a sheet processing apparatus.[0005]Examples of such a sheet processing apparatus include one which corrects lateral deviation of a sheet in the width direction by detecting a side edge of the sheet, moving the sheet in the width direction, and aligning the side edge of the sheet with a predetermined position (see, for example, Japanese Laid-Open Patent Publication (Kokai) No. 2007-001761). In this conventional sheet processing apparatus, processing such as punch...

Claims

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Application Information

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IPC IPC(8): B65H7/10
CPCB65H7/10B65H5/062B65H9/00B65H9/002B65H9/101B65H33/08B65H2301/34B65H2301/3621B65H2301/5152B65H2404/1424B65H2511/22B65H2553/81B65H2701/1315B65H2801/27G03G15/6538
Inventor ISHIKAWA, NAOKIKATO, HITOSHI
Owner CANON KK
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